Pets

#include <stdio.h>
#include <stdlib.h>

struct Pet{
    char owner[30];
    char chip[7];
    float price;
};

struct Pet Add_Pet(){
    FILE* file;
    file = fopen("animalsText.txt", "w");
    if(file == NULL){
        fprintf(stderr, "FILE ERROR");
        exit(-1);
    }
    struct Pet p;
    scanf("%s", p.owner);
    scanf("%s", p.chip);
    scanf("%4f", &p.price);
    fprintf(file, "%s,%.2f\n", p.owner, p.price);
    fclose(file);
    return p;
}

void search_by_price(struct Pet* pets, int size, float price){
    int flag = 1;
    for(int i=0;i<size;i++){
        if(pets[i].price == price){
            printf("\n%s - %s\n", pets[i].owner, pets[i].chip);
            flag = 0;
        }
    }
    if(flag){
        printf("\nNo such price found!\n");
    }
}

void bin_search(float price){
    FILE* file;
    file = fopen("animalsBin.bin", "rb");
    int size;
    while(fread(&size, sizeof(int), 1, file)==1){
        char *name =(char*)calloc(size+1, sizeof(char));
        fread(name, sizeof(char), size, file);
        name[size] = '\0';
        char chip[8];
        fread(chip, sizeof(char), 7, file);
        chip[7] = '\0';
        float p;
        fread(&p, sizeof(float), 1, file);
        if(p >= price){
            printf("\nOwner: %s\n", name);
            printf("Chip: %s\n", chip);
            printf("Price: %.2f\n", p);
        }
    }
    fclose(file);

}

int main(){
    FILE* file;
    file = fopen("animalsBin.bin", "wb");
    if(file == NULL){
        fprintf(stderr, "FILE ERROR");
        exit(-1);
    }
    char name[5] = "denis";
    int size = 5;
    char chip[7] = "A12345B";
    float price = 40;
    fwrite(&size, sizeof(int), 1, file);
    fwrite(name, sizeof(char), 5, file);
    fwrite(chip, sizeof(char), 7, file);
    fwrite(&price, sizeof(float), 1, file);
    fclose(file);
    //
    struct Pet* pets =(struct Pet*)malloc(sizeof(struct Pet)*5);
    pets[0] = Add_Pet();
    search_by_price(pets, 5, 30);
    bin_search(30);
}